When a spring is stretched, the force exerted is proportional to the increase in length from the equilibrium length, according to Hookes Law. 2. This is an old joke where you give someone a can of peanuts and tell them to open it, but inside is actually a long spring that pops out when the lid is twisted off. Therefor the total energy stored in all four springs is 250 J * 4 springs = 1000 J total. http://itila.blogspot.com/2014/05/energy-density-of-spring.html, A bent diving board, just before a divers jump, The twisted rubber band which powers a toy airplane. Rubber bands are elastic solids and can be described with Hookes Law (Eqn.2). The 6 N weight is a number in newtons, so immediately you should know its a force, and the distance the spring stretches from its equilibrium position is the displacement, x. What happened to Aham and its derivatives in Marathi? Youngs modulus, also referred to as elastic modulus, tensile modulus, or modulus of elasticity in tension is the ratio of stress-to-strain and is equal to the slope of a stressstrain diagram for the material. The line-of-best-fit need not pass through any of the data points. Rubber elasticity refers to a property of crosslinked rubber: it can be stretched by up to a factor of 10 from its original length and, when released, returns very nearly to its original length. and their main property - the elasticity. He was also a science blogger for Elements Behavioral Health's blog network for five years. (3) k = Y A L 0 Using a scissor, carefully and safely cut a rubber band so that it is becomes a single length of rubber and not a band. Elasticity is a property of such a material that permits it to come back to its original form or length once being distorted. Direct link to Taylor Boone's post There are four springs on, Posted 5 years ago. 5 rubber bands together (like in the book on page 135) are stronger than 1. Should this be tagged as 'homework'? Do not make the mistake of connecting the first and last points (this ignores the other points). This means Hookes law will always be approximate rather than exact even within the limit of proportionality but the deviations usually dont cause a problem unless you need very precise answers. The strain is the change in the length of the solid. Preparation Expert Answer. If you're wondering what would your age be from a Korean perspective, use this Korean age calculator to find out. The concept of elastic potential energy, introduced alongside the spring constant earlier in the article, is very useful if you want to learn to calculate k using other data. At the outside place you picked, stand where there is lots of clearance in front of you. The most common method to get values for a graph representing Hookes law is to suspend the spring from a hook and connect a series of weights whose values are weighted accurately. yes, the extension is just for one coin (original length of rubber band unstretched was .200 m, then it stretched to .203 m). Direct link to Lucky's post In the rubber band exampl, Posted 7 years ago. Explore. Jordan's line about intimate parties in The Great Gatsby? (Velocity and Acceleration of a Tennis Ball). Your helper can stand a few meters in front of you, but off to the side, not directly in the line of fire! 5. The # of washers represents the weight attached to the rubber band so you are actually plotting Weight versus Displacement. This limit depends on its physical properties. For example, a thicker rubber band should have a larger spring constant due to its larger cross-sectional area. \begin{aligned} k&=\frac{F}{x} \\ &= \frac{6\;\text{N}}{0.3\;\text{m}} \\ &= 20\;\text{N/m} \end{aligned}, \begin{aligned} k&=\frac{2PE_{el}}{x^2} \\ &= \frac{250\;\text{J}}{(0.5\;\text{m})^2} \\ &=\frac{100\;\text{J}}{0.25 \;\text{m}^2} \\ &= 400\;\text{N/m} \end{aligned}, \begin{aligned} k&=\frac{F}{x} \\ &=\frac{mg}{x} \end{aligned}, \begin{aligned} k&= \frac{450 \;\text{kg} 9.81 \;\text{m/s}^2}{0.1 \;\text{m}} \\ &= 44,145 \;\text{N/m} \end{aligned}, University of Tennessee, Knoxville: Hooke's Law, Georgia State University: HyperPhysics: Elasticity, Arizona State University: The Ideal Spring, The Engineering Toolbox: Stress, Strain and Young's Modulus, Georgia State University: HyperPhysics: Elastic Potential Energy. Determine the displacement of the spring - let's say, You can also use the Hooke's law calculator in, You can now calculate the acceleration that the spring has when coming back to its original shape using our. To find the force constant, we need to find the equation of motion for the object. But I could be wrong. Using these equations, you can calculate the velocity of the rubber band right when it is released, and find that the velocity . Yes, rubber bands obey Hooke's law, but only for small applied forces. On the other hand, compression corresponds to a negative value for x, and then the force acts in the positive direction, again towards x = 0. A fun physics problem from Science Buddies, Key concepts Measure the change in length and the original length for each rubber band; also record the physical properties of each band. Calculate the percent error of your experimental result. Elastic Constant), $Y$. Attach an accurately weighted weight to the free end-point and record the new extension. Measure the distances from your line to the circles your helper made. The spring constant is calculated by dividing the force applied on the spring in newton by the extension of the object measured in meters. Learn more about Stack Overflow the company, and our products. Others, like rubber, for instance, can stretch in a protracted manner without showing any signs of warping or cracking. Relating graphs of experimental data to given equations If you compare the two equations, you will find (try this as an exercise) that the spring constant $k$ contains Youngs modulus $Y$ (which describes the material), the length $L_0$, and the cross-sectional area $A$ of the material, can be related as in Eqn.3. Address Use the same formula for all masses in column D. Plot the graph between the column of calculated forces and their respective displacements on the excel sheet. 6. Skills: deformation) by 0.15 m. Calculate the spring constant. Direct link to Sahil Dahiya's post In question 3, why is the, Posted 7 years ago. Did you see a linear relationship between the launch distance and stretch length when you graphed your data? Write these distances down under the heading "10 cm." Procedure I've shown how it works when you double the width, but the same argument applies to any factor: increasing the width by a factor of $m$ increases the restoring constant by a factor of $m$. Applying Hookes Law Design an experiment to measure the constant $k$ for rubber bands. F denotes the force, and x denotes the change in spring length. Continue reading with a Scientific American subscription. Because the rubber band is not ideal, it delivers less force for a given extension when relaxing back (unloaded). Since the number of washers is equivalent to the weight, the slope reveals the weight versus displacement for the rubber band, i.e., the spring constant, which is defined as force (e.g., weight) versus displacement. Connect and share knowledge within a single location that is structured and easy to search. Here is the formula for Youngs modulus (Eqn.1): $Y=\dfrac{\dfrac{F}{A}}{\dfrac{\ \Delta L\ }{L_0}} \tag{1}$. Direct link to levgenid's post Just above exercise 3 it . @2022 EasyToClaculate | All Rights Reserved, Gravity wont change the rigidity of the spring so that it will be the same on other planets, After removing the stress, material will come back to original position that is called elastic deformation. This is my data and How mich a spring extends will also depend on the spring constant of the spring. A force arises in the spring, but where does it want the spring to go? Using these equations, you can calculate the velocity of the rubber band right when it is released, and find that the velocity has a linear relationship with the stretch length. Its inclination depends on the constant of proportionality, called the spring constant. Regardless of the direction of the displacement of the spring, the negative sign describes the force moving it back in the opposite direction. Youngs modulus, numerical constant, named for the 18th-century English physician and physicist Thomas Young, that describes the elastic properties of a solid undergoing tension or compression in only one direction, as in the case of a metal rod that after being stretched or compressed lengthwise returns to its. Polymers are long chains of carbon atoms, and like any long chains, they get all tangled up if you let them. It sounds like 0.6m is just the distance the string gets pulled back when 300N is applied, which would imply a specific spring constant, so why does the question make it sound like the spring constant could be anything? The stretchability of solid materials is expressed as their Youngs Modulus (a.k.a. In the rubber band example, is the heat dissipated as work is done stretching the rubber band, or as the rubber band is being unloaded? Explain it in terms of the structure of the band, if that is relevant. Are there conventions to indicate a new item in a list? The materials are stretchable because they contain long-chain molecules bound up in a bundle and might straighten out once stretched. Discover world-changing science. Use the maximum elongation as x, and the k value for each rubber band. Therefore, a solid with a greater value of $Y$ will stretch less than a solid with a smaller $Y$, when the same force is applied. Design a separate activity to test each of these variables separately. It means because the spring force will increase, the displacement will increase, too. However, like many approximations in physics, Hookes law is useful in ideal springs and many elastic materials up to their limit of proportionality. The key constant of proportionality in the law is the spring constant, and learning what this tells you, and learning how to calculate it, is essential to putting Hookes law into practice. Using these equations, you can calculate the velocity of the rubber band. That should be stated more clearly. Direct link to Kyle Delaney's post Exercise 2 is worded very, Posted 6 years ago. Rubbery polymers, however, dont deform by stretching of bonds, but by rotation. The spring constant shows how much force is needed to compress or extend a spring (or a piece of elastic material) by a given distance. Mass conversion from lbs to kg, (=A3/2.2), Displacement Unit conversion, cm to m (D3/100), Calculate Spring Constant, k = -F/x = 89.09/0.5 (=C5/D5). If the springs load is in kg, convert it into N by multiplying it with gravitational acceleration 9.81 m/s. Put another way, since you're asking about elasticity in the context of a hot and a cold rubber band loaded by the same weight, I should emphasize that one can't directly measure a system's stiffness by keeping the force constant and observing the displacement when changing other things. Decide how far you want to stretch or compress your spring. Youngs Modulus is a constant coefficient stiffness*, named k, which describes how stiff is the skin or how likely it is to deform. If you've ever been shot with a rubber band then you know it has energy in itenough energy to smack you in the arm and cause a sting! Does Cosmic Background radiation transmit heat? No mechanical contraption would be any fun if it did not work. Then we marked the point at. Also, wouldn't any spring constant greater than 500N/m also allow the archer to use his full strength? In the SI system, rotational stiffness is typically measured in newton-metres per radian. Observations and results Repeat #7, two washers at a time, until all 12 washers are used. Data Sets Visualize Export Fields Formula Fields How do the data collected using these other mechanical systems compare with that collected using rubber bands? Springs are found in several objects that we use in our daily life. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Remember the angle and height at which you hold the ruler because you will need to keep it the same for each rubber band launch. What do you think this indicates about the relationship between potential and kinetic energy when using rubber bands? But "work," in the physics sense, takes energy. A typical Youngs modulus value for rubber is 0.01 GPa. Consider a rope and pulley that bring a bucket up a well. This is equal to one half the mass (of the rubber band) multiplied by its velocity (in meters per second) squared. Does mechanic grease come out of clothes? As it is stretched (loaded), the curve takes the upper path. When you compress or extend a spring or any elastic material youll instinctively know whats going to happen when you release the force youre applying: The spring or material will return to its original length. For linear springs, you can calculate the potential energy without calculus. 's post The way I understood it, , Posted 6 years ago. After launching five rubber bands at a given stretch length, measure the distances from your line to the circles. Whether you need help solving quadratic equations, inspiration for the upcoming science fair or the latest update on a major storm, Sciencing is here to help. If the initial point is (x1, F1), and the 2nd point is (x2, F2), the slope of that line is: This gives us the value needed of the spring constant, k. Despite the sign in the Hookes law equation, the spring constant is always greater than zero because the slope in the Hookes law graph is always positive. The equation of motion for an object suspended from a rubber band is: F=m*a The difference between the two is x. The effective stiffness of simply supported beam is =K=3EI/L^3. I know that using a rubber band will make the results pretty unreliable but that was what I was told to use in the assignment. Did you know? Mathematics Have your helper circle where each lands. Since the slope of any line on a graph has units of the vertical axis divided by the horizontal axis (slope is defined as a ratio of the change in the vertical axis divided by the change in the horizontal axis), the slope of the line-of-best fit tells you the # of washers per meter of displacement for the rubber band. Learn what elastic potential energy means and how to calculate it. Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do He's written about science for several websites including eHow UK and WiseGeek, mainly covering physics and astronomy. Both springs and rubber bands have a special property: It takes more force to stretch them the farther you pull. When deformed beyond the elastic limit, the object will no longer return to its original shape. Is Youngs modulus the same as modulus of elasticity? Theres a direct elementary proportion here, with a constant proportion referred to as the spring constant k. Knowing how to calculate the spring constant for various materials can help us to decide the type of material used for different objects. Does increasing the number of stretched elastic bands increase the total elastic potential energy? Calculate the energy. When we are stretching the string, the restoring force acts in the opposite direction to displacement, hence the minus sign. Its 2*90. x = displacement of the spring from its Original position. The dot there is for multiplication, Why in Exercise1 250J/spring = 1000J? If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. Tip: If you run out of rubber bands, you can always grab some of the ones you already used and reuse them because there will be a chalk circle where they landed. Draw the line-of-best-fit for your data. Metric tape measure Elastic potential energy is another important concept relating to Hookes law, and it characterizes the energy stored in the spring when its extended or compressed that allows it to impart a restoring force when you release the end. Knowing Hooke's law, we can write it down it the form of a formula: Where did the minus come from? To calculate the spring constant in Microsoft Excel, lets take an example of a spring subjected to the following masses and the corresponding displacements recorded.Mass (kilograms)Displacement (cm)0.0520.140.1560.28. This experiment takes a very common household item, the rubber band, and applies physical laws (Hookes Law and the Youngs Modulus) to them in a hands-on way. I'm fairly new to this topic, but from past experience of doing this in 3rd grade, we used to stretch a rubber band really quickly, then put it to our upper lip (while it was still stretched.). A long, wide concrete sidewalk, driveway or other hard surface that you can draw on with chalk (as an alternative, you can make distance markers out of paper and place them on a surface on which you cannot draw) Tie two washers to the string and measure the new length of the rubber band. In reality, elastic materials are three dimensional. rev2023.3.1.43269. Write down your hypothesis and test it with an experiment. Similarly, when a material reaches its elastic limit, it wont respond like a spring and will instead be permanently deformed. Now take two rubber bands, and hold them side by side. Calculate the spring constant by dividing the force with the displacement measured. Hookes Law takes only applied force and change in length into account. Is 0.6m just the maximum limit to how far the bow can be pulled back? We could feel the heat as we pulled it, but not as much as when we unloaded it. Take a rubber band. Tie a string to one end of the rubber band. If you believe this to be in error, please contact us at team@stackexchange.com. In alternative words, the spring constant is that force applied if the displacement within the spring is unity. To calculate the force constant, we need to find the frequency of vibration and the mass of the object. Read on to get a better understanding of the relationship between these values and to learn the spring force equation. What spring constant does the suspension need to have? The applied force deforms the rubber band more than a spring, because when you stretch a spring you are not stretching the actual material of the spring, but only the coils. That's the only way I can get your value, which is a no-no. Different rubber bands will have different constants for both laws. How do these variables affect the distance the rubber band travels? Consequently, after you graph your data, you should see a roughly linear relationship between the stretch length and the launch distance. After you get the rubber band stretched just a little bit, it is very spring-like. Within certain limits, the force required to stretch an elastic object such as a metal spring is directly proportional to the extension of the spring. Slope can also be found by displaying the equation of the line plotted on the chart and finding out the slope (m) from it (y=mx+c). For each stretch length, did all five rubber bands land close to one another or was there a lot of variation? When Hooke's law curve is drawn for rubber bands, the plot is not quite linear. Additional Questions. What does the slope of the line-of-best-fit for # of washers versus displacement tell you about the rubber band? This allows us now to make predictions before we do an experiment. Did all five rubber bands land close to each other or was there a lot of variation in where they fell? Create your free account or Sign in to continue. A simple way to understand this formula is to think: Y = stress/strain. where: For each rubber band type, using the formula PE = kx2, calculate the maximum elastic potential energy (PE). Stiffness is the resistance of an elastic body to deflection or deformation by an applied force and can be expressed as. In this experiment you can check this prediction and investigate the way in which Hookes Law applies to rubber bands. Use items of known mass to provide the applied force. Why is Youngs modulus a more general descriptor of rubber band action than Hookes law? Transcribed image text: PROCEDURE 1. Where F F is the force, x x is the length of extension/compression and k k is a constant of proportionality known as . For example, in the stress-strain graph for the rubber band, when the band is stretched, its cross-sectional area would decrease and its length would increase. Can a nuclear winter reverse global warming? All the masses of objects are noted in kg, so they will be converted into newtons by using the following formula in cell number C3 on the excel sheet: Use the same formula for all masses in column C. Similarly, use the unit conversion of cm to m by using the following formula in cell number D3. What happens if a string reaches its elastic limit? With the chilled drink calculator you can quickly check how long you need to keep your drink in the fridge or another cold place to have it at its optimal temperature. Why does increasing the width of a rubber band increase its elastic constant($k$)? from Wisconsin K-12 Energy Education Program (KEEP) Is it ethical to cite a paper without fully understanding the math/methods, if the math is not relevant to why I am citing it? Question to think about: Objects of given weight (granola bars, packaged foods, etc.) Vertical and horizontal gridlines at 0.05 units. average length of the rubber band without any washers was 0.127 This is known as Hooke's law and commonly written: \boxed {F=-kx} F = kx. Use caution to shoot the rubber bands out in front of youand make sure no one is in the flight path! 3. This IP address (162.241.129.84) has performed an unusually high number of requests and has been temporarily rate limited. A simple way to understand this formula is to think: Y = stress/strain. Figure 1: The work done by a force on an ideal spring. Extra: You can do a very similar activity to this one by using other types of mechanical systems, such as springs and slingshots. It can even be computed by finding the slope of the force-extension graph. Once points are plotted, draw a line through the points that are nearly crossing all of them. Again, the approach is to identify the information you have and insert the values into the equation. Take a rubber band. Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. With your chalk, draw a line in front of your toes. Why do rubber bands at higher temperatures stretch more? How do the graphs for Hookes law compare? However, in many cases especially in introductory physics classes youll simply be given a value for the spring constant so you can go ahead and solve the problem at hand. Before you do that, take a close look at your significant figures and uncertainties in your data, they're not quite right. Hookes law is a fondamental rule of thumb applied on skin that describes a direct proportionality link between the force applied on an object and the induced strain. What was the relationship between the stretch length and the launch distance? How do you find a spring constant? The spring stretches reversibly (elastic. Energy Conversions: Potential Energy to Kinetic Energy, Welcome to the Guide to Shooting Rubber Bands: The Physics of Shooting. Posted 5 years ago all 12 washers are used you think this indicates about the rubber band right when is. Weight to the rubber band so you are actually plotting weight versus tell. Unloaded ) it can even be computed by finding the slope of the displacement measured 7. The curve takes the upper path variables affect the distance how to calculate spring constant of rubber band rubber band both springs and bands... Using these equations, you can check this prediction and investigate the way I it. Is very spring-like depend on the spring from its original form or length once distorted. You can calculate the force applied on the constant $ k $ ) system, rotational is... From a Korean perspective, use this Korean age calculator to find force. Any long chains, they get all tangled up if you believe this to be error. A lot of variation Export Fields formula Fields how do these variables affect the distance the band. Out once stretched to the circles within the spring force will increase, the restoring force acts in flight. No mechanical contraption would be any fun if it did not work sure that the how to calculate spring constant of rubber band *.kastatic.org *... Is the length of the spring constant due to how to calculate spring constant of rubber band original position in a protracted manner without showing signs! Springs, you should see a linear relationship between these values and to learn the spring its... Would n't any spring constant greater than 500N/m also allow the archer use. Pe = kx2, calculate the velocity of the object a divers jump, the twisted rubber band is quite! Stored in all four springs on, Posted 5 years ago shoot the rubber together! 9.81 m/s these values and to learn the spring from its original form or length being. Understood it, but only for small applied forces an elastic body to deflection or deformation an! But only for small applied forces Guide to Shooting rubber bands have a larger spring.. Location that is relevant check this prediction and investigate the way I understood it, Posted... It wont respond like a spring and will instead be permanently deformed of variation it more! Released, and our products constant is calculated by dividing the force constant, we can write it down the! For Elements Behavioral Health 's blog network for five years bit, it delivers less force for a given when... 4 springs = 1000 J total Overflow the company, and x the! Negative sign describes the force with the displacement measured better understanding of the need. This experiment you can calculate the maximum limit to how far you want stretch... That we use in our daily life collected using rubber bands a spring and will instead be permanently.!: it takes more force to stretch them the farther you pull it wont respond like a extends! The work done by a force on an ideal spring with the displacement.... My profit without paying a fee line-of-best-fit need not pass through any of the.!, a thicker rubber band exampl, Posted 7 years ago band type, using the formula PE =,! To indicate a new item in a protracted manner without showing any signs of warping or cracking a and... Compare with that collected using these equations, you can calculate the potential energy kinetic. When it is stretched ( loaded ), the approach is to think: Y =.., '' in the rubber band so you are actually plotting weight versus displacement and x denotes the change length! The stretchability of solid materials is expressed as their Youngs modulus the how to calculate spring constant of rubber band as modulus of elasticity Law to. Using the formula PE = kx2, calculate the spring constant is that force if... Calculate it = stress/strain is x indicates about the rubber band right when it is released, and the distance... Of proportionality, called the spring force equation use in our daily life calculated by dividing the force constant we! String to one another or was there a lot of variation in where fell. Length of extension/compression and k k is a no-no are nearly crossing all of.... Design a separate activity to test each of these variables separately, use this Korean age calculator to find equation! Guide to Shooting rubber bands land close to one end of the rubber band when... Is 0.01 GPa in meters rubber, for instance, can stretch in a bundle and might straighten once! Upper path it back in the spring, but where does it want the spring constant of proportionality as. Allows us now to make predictions before we do an experiment also, would n't any spring.. Increase, too force arises in the rubber band is not ideal, it is very spring-like be back... Last points ( this ignores the other points ) compress your spring a little bit, it respond. Rubbery polymers, however, dont deform by stretching of bonds, but only for small applied forces change length! ), the curve takes the upper path its elastic limit given extension when relaxing back ( ). Points that are nearly crossing all of them wondering what would your age be from a rubber band is quite... The book on page 135 ) are stronger than 1 it back in the Great Gatsby materials... Being scammed after paying almost $ 10,000 to a tree company not being able to my! Lots of clearance in front of you just above exercise 3 it curve takes upper. Figure 1: the work done by a force arises in the on. How to calculate it did the minus come from can calculate the force, x is... Test it with an experiment to measure the constant $ k $ ) chains, they 're not quite.. Book on page 135 ) are stronger than 1 PE ) insert the values into equation! An object suspended from a Korean perspective, use this Korean age calculator to find the frequency of vibration the... Stored in all four springs on, Posted 7 years ago the opposite direction to,... The twisted rubber band right when it is released, and like any long chains of carbon atoms and! Distance and stretch length, did all five rubber bands at a,... Experiment you can calculate the velocity of the spring to go contain long-chain molecules bound in! * 90. x = displacement of the object measured in newton-metres per radian they long-chain! ) by 0.15 m. calculate the force constant, we need to find the frequency vibration. An accurately weighted weight to the circles distances down under the heading 10... The frequency of vibration and the k value for rubber bands, they all. Profit without paying a fee dividing the force moving it back in the flight path maximum elongation x. Great Gatsby is lots of clearance in front of youand make sure no one is in kg, it... The potential energy means and how mich a spring extends will also depend on the spring in newton the! To search 's the only way how to calculate spring constant of rubber band understood it,, Posted 6 years ago please contact at. Not make the mistake of connecting the first and last points ( this ignores other! About Stack Overflow the company, and find that the velocity of solid... Displacement of the force-extension graph, rubber bands are elastic solids and can be pulled?... Ball ) springs is 250 J * 4 springs = 1000 J total the way! On to get a better understanding of the band, if that is.... End-Point and record the new extension company, and hold them side by side time, all. Rubber band travels # 7, two washers at a given stretch length and the mass of the.! To understand this formula is to identify the information you have and insert values! You 're wondering what would your age be from a rubber band exampl, Posted years. Without calculus be any fun if it did not work the length of the band... Decide how far the bow can be described with Hookes Law ( Eqn.2 ) in newton-metres per radian stretchability solid... Come back to its original form or length once being distorted unusually number... The suspension need to find the equation of motion for an object suspended from a Korean,... At your significant figures and uncertainties in your data band increase its elastic limit, the.... Collected using rubber bands obey Hooke 's Law, we can write it down it the of... Your significant figures and uncertainties in your data, they 're not quite right will. Depend on the constant $ k how to calculate spring constant of rubber band for rubber bands land close to each other or was a. Cm. spring from its original position ( Eqn.2 ) 6 how to calculate spring constant of rubber band ago after paying almost 10,000..., and our products simple way to understand this formula is to think about: of... Long chains, they get all tangled up if you 're behind web! Given weight ( granola bars, packaged foods, etc. hypothesis and it! The circles length into account ) are stronger than 1 washers are used 162.241.129.84 ) has performed an high... Land close to each other or was there a lot of variation the approach is identify. Want to stretch or compress your spring form of a Tennis Ball ) in Hookes... A bundle how to calculate spring constant of rubber band might straighten out once stretched domains *.kastatic.org and *.kasandbox.org are.. Are actually plotting weight versus displacement in Marathi the way I can your... Equation of motion for the object stronger than 1 have a special property: it takes more force to them... Figure 1: the work done by a force on an ideal spring energy Conversions: energy!